Habve stee



(No Model.) 2 Sheets-Sheet 1.

W. T. VAIL. HARVESTER,

No. 433,969. Patented Aug. 12, 1890.

(No Model.)

2 Sheets-Sheet 2.

W. T. VAIL} HARVESTER.

Patented Aug. 12

ma uonms PETERS 20., murmurua WASHINGYDN, u. c,

. provement in Grain-Harvesters, of which the objects of my inventionare to provide a vi- UNITED STATES I ATENT OFFICE.

IVILLIAM f1. VAIL, OF FARGO, NORTH DAKOTA, ASSIGNOR OF ONE-HALF TO MAXSTERN AND ANDREV B. MOUOK, BOTH 0F SAME PLACE.

HARVESTER.

. SPECIFICATION forming part of Letters Patent No. 433,969, dated August12, 1890.

I Application filed August 27, 1889. Serial No. 321,909. No model.)

To all whom it may concern:

Be it known that I, WILLIAM T. VAIL, a citizen of the United States,residing at Fargo, in the county of Cass and State of North Dakota, haveinvented a new and useful Imfollowing is a specification.

My invention relates to endless aprons for carrying the grain to thebinder, and to vibrating butters for adjusting the butts of grain as itfalls upon the platform, in which a vibrating evener or butter operatesin conjunction with a single endless apron; and the brating butter, soas to even the butts of grain, and cause it to pass on up to the binderunobstructed; second, to accomplish this by the use of a single apron;and, third, to lessen the friction of the apron on turning the anglewhere it rises from the platform. I attain these objects by themechanism illustrated in the accompanying drawings, in which Figure 1 isa top view of the machine, showing the platform and carrier-apron withits marginal belts and cross-slats. Fig. 2 is a side elevation of themachine, showing shoe butter and crank and the auxiliary crank connectedwith the shoe-butter. Fig. 3 is a detached view of the shoe-butter andparts in perspective. Fig. A is a sectional view of the carrier-apronand cross-slats with the anti-friction rollers at the turn of thecarrierapron.

Similarletters refer to similar parts throughout the several views.

The platform A, at its junction with the elevator, forming angle a, isprovided with shields or guards b b'for the protection of rollers o 0,located immediately under them. The upper fold of the apron passes underthese rollers as it turns the angle and rises up the elevator to thebinder, thus lessening the friction at that point. These rollers areshortjust long enough to carry the marginal belts d d-and are situatedover either end of the driving-roller n, under which the under fold ofthe apron passes. This apron is provided with belts d d, about one inchin width, running along its margin on either edge and secured firmlythereto. The cross-slats e e e with which the apron is providedterminate at the inner edge of the belts, but are firmly secured to themby means of strips of iron or other material upon the under side of thesame, extending under the belts and fastened by rivets uniting theslats, belts, and apron firmly together. This is to prevent the edgesfrom turning up. The apron in other respects is operated like aprons inother machines, and is carried by rollers 0, n, and m, and power may beapplied by a gear or pulleys and belts.

B is a vertical crank-shaft, upon which the vibrating shoe-butter iscarried and by which it is operated, having pulley J at the top toreceive a belt, but may be run by a gear connected with thedriving-Wheel.

In order to cause the shoe-butter to describe an eccentric motion,suitable to even the butts of the straw and bring them to a line withthe apron, the crank-shaft G is provided, being pivoted to standard 76at one arm and to the rear end of the vibrating shoe at the other arm.The velocity is to be regulated according to circumstances, so as tobring the butts of the grain to a line before being carried by the apronup the elevator to the binder.

In order to aid the endless apron in carrying the grain up the elevator,the fluted roller 80 P is located over the angle a and at a point wherethe grain leaves the platform and rises up the elevator, and is operatedby a pulley or belt at its rear end and a pulley at the rear end ofroller it just below. In connection with fluted roller 1) are fingers ss s s, rising up the elevator over and parallel with the carrier-apron.Pressure upon the fingers is regulated by means of flat spring '0. Forthe purpose of giving the proper tension to the apron the roller 0 atthe top of the elevator is made yielding by sliding bearings controlledby screw-bolts u u at the top of the frame.

I have attempted to provide a mechanism in my invention that will avoidmany of the difficulties found in most of the harvesters now in use ingetting the cut grain to the binder without clogging and tangling, andwill avoid the friction at the angle where the apron turns to run up tothe binder, and for this purpose the rollers c c are located so that thebelts on the margin of the apron shall freely pass around them. I

Having described my invention, what I claim as new, and desire to secureLetters Patent for, is

1. The combination, in a harvester, of an endless carrier-apron providedwith endless belts along its border having cross slats or lags whichextend only to the inner sides of the marginal belts attached thereto bymeans of iron or steel plates under each and extending under the endlessbelts, all firmly united by rivets or bolts, anti-frictionrollers c cand roller n at the angle made by the platform, the elevator, guards bb, rollers 0 and m, tension screw-bolts Mu at the top of the elevator,

substantially as described, and for the purposes set forth andspecified.

